I have a stock 289 (automatic) in my 68 coupe. I have decided to get the edelbrock power package, which includes matching 4v intake, 600 cfm carb, cam, and lifters. I am getting a distributor recurve kit and a pertronix unit. Plus, im also gonna get a dual 2.5" exhaust with 40 series flowmaster mufflers. Can anyone give me an estimate of how much hp this will add (I currently have 198 hp)?